Both the Formosa Marine SRT 635 Centre Cabin 2027 and the Formosa Marine SRT 635 X Bowrider 2027 are V-hull designs, both built in aluminium, so the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
On paper these two are close siblings in the size department - Formosa Marine SRT 635 Centre Cabin 2027 at 21,1 ft versus Formosa Marine SRT 635 X Bowrider 2027 at 21,1 ft. At 2 328 lbs and 2 279 lbs respectively, both sit in a similar weight class - either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
Both boats share a closely matched power ceiling - 225 hp for the Formosa Marine SRT 635 Centre Cabin 2027 and 225 hp for the Formosa Marine SRT 635 X Bowrider 2027. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Both carry nearly identical fuel loads - 58 gal and 58 gal - so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Formosa Marine SRT 635 X Bowrider 2027 is rated for 8 passengers, while the Formosa Marine SRT 635 Centre Cabin 2027 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Formosa Marine SRT 635 X Bowrider 2027 could be the deciding factor.
Bottom line: Choose the Formosa Marine SRT 635 X Bowrider 2027 if your priority is putting more people on the water - it handles 8 passengers and at 21,1 ft it has the deck room to back that rating up comfortably. The Formosa Marine SRT 635 Centre Cabin 2027 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.